pitch invasion
noun [ C ] uk/ˈpɪtʃ ɪnˌveɪ.ʒən/ us/ˈpɪtʃ ɪnˌveɪ.ʒən/
（通常在体育比赛结束后）大批观众从看台涌入比赛场地（表示欢庆或抗议）
an occasion when a large number of people at a sporting event such as a football game run onto the pitch, usually at the end of the game, in order to celebrate or protest